OK, you’ve exhausted all of the existing air from an interior space; now how do you replace it? You bring in makeup air from another source. For the purpose of an HVAC discussion, your source will be mechanical equipment — makeup air units.

Heat-only, direct-fired, and indirect-fired makeup air units have been added to the company’s product line. 

BasX Solutions, a manufacturer of custom engineered products including HVAC solutions, announced that it has completed its acquisition of the clean room product line from Seasons 4.

The unit includes a standard neoprene, vibration-isolated blower and motor for quiet operation.

Ideal for cost-conscious applications that require 100 percent outside air, the new unit from Modine provides first-rate efficiency with a 100 percent thermal efficiency (92 percent sensible), and extends airflow capability to as low as 800CFM to cover far more applications than previously offered.

Friedrich recently sponsored a NEWS webinar titled “Ductless Split System Innovations That Matter to Your Bottom Line.”  Below are questions taken from the Q&A portion of that webinar.

Keeping a refrigeration system clean and dry by changing the liquid line drier can be the least expensive insurance against compressor failure.

As the federal government plans millions in grant funding to boost heat-pump manufacturing in the U.S., a big player in the market as well as a newcomer are thrilled with the opportunity.

Amy Harlan, who has an extensive background in electronics and device connectivity, is the new business development manager for device connection technology at the global electronics technology firm.

BrainBox AI intends to integrate ABB’s MSR business and its installed base of 12,000-plus retail locations in its current operations.

The two donated Airedale ClassMate packaged units were installed in the football team's fieldhouse at Parry McCluer High School in Buena Vista, Virginia.

With how cutthroat and competitive the HVAC market is, contractors must leverage data-driven insights and technological advancements to drive growth, attract ideal customers, and optimize customer satisfaction.

The recent Women in HVACR conference offered sessions aimed at advancing attendees' knowledge on industry topics such as the refrigerant transition, as well as building their leadership skills.

Contractors who are embracing the technological advancements say ignoring a new neighborhood of home automation products could be a big mistake.

As more homeowners are ditching oil heaters and moving to heat pumps, the rest of the country can learn from the cold-climate success story.

Despite the arguments regarding the practicality of heat pumps in cold climates, residents of Maine have fully embraced them.

Michael Kircher and Markus Voelter introduce the topic of software product line engineering. They motivate when and why product lines are important to consider and what makes them so special. Further, they introduce some key terminology, such as platform, core asset, feature model, commonality, and variability.

Variability is one of the key concerns in software product line engineering. The episode introduces the concepts of structural and non-structural (or configurative) variability. It also discusses how to find and model variability, and especially how to implement variability in the solution artifacts. Michael and Markus discuss a series of variability mechanisms that can be used with today's programming languages and technologies.

In this episode we talk about the relationship between software architecture and the business. Based on his book, Beyond Software Architecture we discuss how things such as branding, licensing, updating or different deployment scenarios influence the technical architecture of a system. We also discuss issues such as portability that add a huge amount of complexity, although from a business perspective it often does not make much sense. In the second part of the interview we discuss how the technical team and the business team can improve the way they work together. We look at some of the games (such as Buy a Feature or Give them a Hot Tub) from his new book Innovation Games, which discusses how to use collaborative play to be more creative and innovative in product creation.

In this episode Charles Krueger, a well-known member of the product line engineering community, talks about his long term experiences in the field. Charles is also the founder and CEO of a company that provides tooling for variability management and product derivation. Besides some clarifications on terms like product line architecture and reference architecture, you also learn what kind of preconditions need to exist before product line engineering can be applied successfully.

In this episode we're talking to Dirk Riehle about open source business models. We started looking at the way OS projects work and defined different kinds of open source projects. In the main part of the discussion we looked at various ways of how to make money with open source: consulting, support contracts, commercial variant of an open source project, etc. We then looked at the chances and risks of each of these approaches. The next part focused on different open source licenses and how they are suitable for open source business. We concluded the episode by discussing a couple of specific questions and loose ends. After the show, Dirk informed me about the following three corrections: Black Duck Software's main product is called protexIP not IP Central, there are presently 70 licenses approved by the Open Source Initiative, and EnterpriseDB has so far acquired $37M in venture capital

This is the first part of a two part topic on roles in software engineering. Michael and Markus discuss role definitions in an corporate environment. For several typical roles we give hints on the expected skills, knowledge, and mindset. In this episode we discuss the roles junior developer, senior developer, and software architect.

This is the second part of the two part topic on roles in software engineering. Michael and Markus discuss role definitions in a corporate environment. For several typical roles we give hints on the expected skills, knowledge, and mindset. In this episode we discuss the roles technical lead, technologist, requirements engineer, product manager, and project manager.

In this episode we talk to Christof Ebert about requirements engineering. As the name "engineering" suggests, we need to be systematic when working and managing requirements. Christof will structure RE into several activities, namely elicitation (identifying the relevant requirements), specification (clearly describing requirements), analysis (synthesizing a solution), verification and validation (achieving good requirements quality), comittment (allocating requirements to a project, product release or iteration), and management (keeping track of the implementation status of requirements). In this episode we discuss these activities and highlight lots of practical guidance.

In this episode Martin talks with Chris Grindstaff about the fundamentals of performance engineering. The episode discusses when and how to work on performance of client- and server-side systems, what you should take into account during development to avoid performance issues, typical situations that cause performance problems, and some common pitfalls when analysing performance.

This episode is an interview with Tom DeMarco and Peter Hruschka about the new book of the Altantic Systems Guild: Adrenaline Junkies and Template Zombies: Understanding Patterns of Project Behavior. This is a session recorded live at OOP 2009. SE Radio thanks Tom and Peter, SIGS Datacom and the programme chair, Frances Paulisch, for their great support!

In this episode we talk with Doug Simon from Sun Microsystems Laboratories about the Maxine Research VM, a so-called meta-circular virtual machine. Maxine is a JVM that is written itself in Java, but aims at taking JVM development to the next level while using highly integrated Java IDEs as development environments and running and debugging the VM itself directly from the Inspector, an IDE-like tool specialized for the Maxine VM. During the episode we talk about the basic ideas behind Maxine, what exactly "meta-circular" means and what makes it interesting and promising to build a Java VM in Java. We talk about the relationship to Sun's current production JVM (HotSpot) and about ideas and directions for the future of Maxine.

Michael discusses with his guest Chuck Connell the differences between software engineering and computer science. What makes software engineering so unpredictable, with so few formal results? And how can we advance the field of software engineering without these results?

This episode is a conversation with Jan Bosch about product line engineering (PLE). Jan has worked in various roles and industries and academia in the context of product lines. In this episode we look at Jan's view of what is next for product lines: software ecosystems. What is their relationship to PLE and how should PLE change to remain relevant?

Recording Venue: Lucene Revolution 2012 (Boston) Guest: Grant Ingersoll Grant Ingersoll, a committer on the Apache Solr and Lucene, talks with Robert about the  problems of full-text search and why applications are taking control of their own search, and then continues with a dive into the architecture of the Solr search engine. The architecture portion of the […]

Recording Venue: Skype Guest: Douglas C. Schmidt In this episode we talk with Douglas C. Schmidt, who is a professor of computer science at Vanderbilt University and a well-respected authority in the fields of patterns and frameworks for concurrent and networked software. In this interview we talk about these topics in the context of massive […]

Josh Long talks to Activiti cofounder Joram Barrez about the wide world of (open source) workflow engines, the Activiti BPMN2 engine, and what workflow implies when you’re building process-driven applications and services. Joram was originally a contributor to the jBPM project with jBPM founder Tom Baeyens at Red Hat. He cofounded Activiti in 2010 at […]

Robert Blumen talks with Cody Voellinger, the founder of a recruiting firm that specializes in filling software engineer roles for San Francisco-area startups, about how jobs are created and how companies and engineers get matched up. Their discussion covers the entire job search process, from job descriptions to salary negotiations. They look at the job market from both sides: how companies define what they want, find the right people, and evaluate candidates, and how job seekers can position themselves for the role they want. Other topics include culture fit versus skill and resumes in an age of social networking. They conclude with a look at the mistakes that job seekers, recruiters, and companies should avoid.

David Heinemeier Hansson, creator of the Ruby on Rails framework and a partner at the software development company Basecamp, talks to Stefan Tilkov about the state of Ruby on Rails and its suitability for long-term development. He addresses some of its common criticisms, such as perceived usefulness for only simple problems, claimed lack of scalability, and increasing complexity. David also talks about the downsides of building JavaScript-centric, “sophisticated” web UIs, and why he prefers well-structured, “majestic” monoliths to microservices.

Jeff Meyerson talks to Idit Levine about Unikernels and unik, a project for compiling unikernels. The Linux kernel contains features that may be unnecessary to many application developers--particularly if those developers are deploying to the cloud. Unikernels allow programmers to specify the minimum features of an operating system we need to deploy our applications. Topics include the the Linux kernel, requirements for a cloud operating system, and how unikernels compare to Docker containers.

Marcus Blankenship talks with Josh Doody about salary negotiation. Topics include a framework for thinking about salary negotiations, how you can know what you're worth, the employers view of salary negotiation, and missed negotiation opportunities. Also discussed are common fears about negotiating and how to overcome them, common mistakes during negotiations, and how negotiation makes your more desirable as an employee.

Björn Rabenstein discusses the field of Site Reliability Engineering (SRE) with host Robert Blumen. The term SRE has recently emerged to mean Google's approach to DevOps. The publication of Google's book on SRE has brought many of their practices into more public discussion. The interview covers: what is distinct about SRE versus devops; the SRE focus on development of operational software to minimize manual tasks; the emphasis on reliability; Dickerson's hierarchy of reliability; how reliability can be measured; is there such a thing as too much reliability?; can Google's approach to SRE be applied outside of Google?; Björn's experience in applying SRE to Soundcloud - what worked and what did not; how can engineers best apply SRE to their organizational situation?; the importance of monitoring; monitoring and alerting; being on call, responding to incidents; the importance of documentation for responding to problems; they wrap up with a discussion of why people from non-computer science backgrounds are often found in devops and SRE.

Show host Edaena Salinas talks with Katie Malone about Machine Learning.  Katie Malone is a Data Scientist in the Research and Development department at Civis Analytics. She is also an instructor of the Intro to Machine Learning online course from Udacity and host of Linear Digressions, a podcast about machine learning. Topics include: machine learning, data science, a career in machine learning.

Asaf Yigal talks with SE Radio’s Edaena Salinas about machine learning in log analysis. The discussion starts with an overview of the structure of logs and what information they can contain. Asaf discusses what the log analysis process looks like without machine learning -- and the role of humans in this – before moving on to how the process is improved by incorporating external resources using machine learning. Topics include: log analysis, machine learning, operations.

Robert Blumen talks to Edson Tirelli about business rules, rules engines, and the JBoss Drools engine.

Kirk Pepperdine talks with Diomidis Spinellis about performance optimization. Topics include development practices, tools, as well as the role of software architecture, programming languages, algorithms, and hardware advances.

Kishore Bhatia talks with Travis Kimmel about Engineering Impact: In the age of data-driven decision making, how does one go about measuring, communicating, and improving engineering productivity? We’ll learn from Travis’ experience building data analytics tools in this space, with insights and best practices for engineering teams and business stakeholders for measuring value and productivity.

Edaena Salinas talks with Tammy Butow about Chaos Engineering. Tammy is a Principal Site Reliability Engineer at Gremlin. The discussion covers: how Chaos Engineering emerged, the types of chaos that can be introduced to a system, and how to structure...

Michael Hausenblas talks with host Kim Carter about topics covered in Michael’s ebook Container Networking, such as single vs. multi-host container networking, orchestration, Kubernetes, service discovery, and many more. Michael and Kim also discuss the roles that IPTables plays, how the allocation of IP addresses is handled, along with the assignment of ports. Overlay networks are covered along with topics such as the open Container Network Interface (CNI).

Travis Kimmel talks with Johnathan Nightingale about scaling engineering management. Their discuss when to hire additional engineering managers and how to set them up for success, how leaders can prepare for “growing pains” as an organization scales,

How can you scale an engineering organization when you haven’t already experienced rapid growth? Jean-Denis Greze of Plaid explains how to proactively enhance team capabilities and readiness by “leveling up” through a maturity map.

Felienne talks to Diomidis Spinellis about different forms of debugging. From using print-statements to version-control systems and operating system tools. We also discuss debugging strategies for different types of programming systems.

Katharine Jarmul of DropoutLabs discusses security and privacy concerns as they relate to Machine Learning. Host Justin Beyer spoke with Jarmul about attack types and privacy-protected ML techniques.

Alex Petrov, author of Database Internals explains the ins and outs of database storage engines. What are they? How do they differ? What problems do they solve? Host Adam Gordon Bell spoke with Alex about these questions as well as how information...